diff --git a/units/en/communication/certification.mdx b/units/en/communication/certification.mdx
index 6d7ab34..bf836f8 100644
--- a/units/en/communication/certification.mdx
+++ b/units/en/communication/certification.mdx
@@ -3,8 +3,8 @@
 
 The certification process is **completely free**:
 
-- To get a *certificate of completion*: you need **to pass 80% of the assignments** before the end of July 2023.
-- To get a *certificate of excellence*: you need **to pass 100% of the assignments** before the end of July 2023.
+- To get a *certificate of completion*: you need **to pass 80% of the assignments** before the end of September 2023.
+- To get a *certificate of excellence*: you need **to pass 100% of the assignments** before the end of September 2023.
 
 <img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit0/certification.jpg" alt="Course certification" width="100%"/>